零点棋牌

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                 产 品 说 明
                适用
                ★ 防火阀通常被安装在通风管道上,平时阀门々常开,气流←温度达到70℃时,阀门关闭。
                性能
                ★  温度到70℃时,温度熔断『器动作,阀门⌒ 靠拉簧力关闭。
                ★  电动关闭,手动关闭,手动复位。
                ★  阀门♂关闭后,可发出电讯你问他号〗,联锁相应的风机。


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